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ZZ572 Crate Engine 720R Base Race Engine 12498826
Description
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ZZ572/720R …AND THE R STANDS FOR RACE!
Engineered by GM Performance Parts and GM Racingexclusively for sportsman racers, the new ZZ572/720R isbuilt around an all-new Gen VI tall deck Bow Tie cylinderblock. This all new race block is filled with a forged 4340 steelcrank with 4.375 inch stroke, shot peened forged 4340 Hbeamrods, and forged aluminum pistons with full floatingwrist pins. Plasma moly piston rings are standard is thescreened and louvered windage tray. GM’s first purpose builtdrag race engine is filled with hard core race parts for hardcore performance and long term durability.
The redesigned rectangular port aluminum cylinder headsresult in a race gas only 12 to 1 compression ratio. A solidroller cam with 0.714 inch lift actuates the stainless steelvalves. And, of course, hardened chromemoly retainers, rollerrocker arms, and dual valve springs are used to complete thevalve train.
A new GM tall deck single plane intake manifold and 1095CFM King Demon carburetor deliver enough air and fuel tomake the 720 horsepower at 6250 RPM and 685 ft.lbs. oftorque at 4500 RPM. Ignition is handled by a multiple sparkdischarge ignition. And an SFI approved torsional damper isinstalled at the factory. Out of the crate and into your race car– it’s just that simple.
Race gas fueled, high revving horsepower, all from GM, theZZ572/720R is the engine that will get you down the trackconsistently, pass after pass, season after season.
Available in both short block, long block and deluxe engine configurations.
ZZ 572/720R Technical Information
GM Crate Engines are horsepower rated to SAE Standards.
Horsepower 720 @ 6250 RPM
Torque 685 Ft. Lbs. @ 4500 RPM
Max. Recommended RPM 6750 RPM
Compression Ratio 12:1
Partial Engine 12498825
Block 25534368 Tall Deck
Bearing Kit, Main 88962212
Bearing Kit, Camshaft 12499434
Crankshaft 88961554 Forged 4340 Steel
Connecting Rod 88962926 Forged 4340 Steel
Bearing Kit, Connecting Rod....88961556
Piston & Pin 88963227 Forged Aluminum
Piston Ring 12499212 Plasma-moly
Camshaft 88962216 Mechanical roller
Balancer 88962814 SFI Approved
Cylinder Head 88961160 Aluminum
Gasket, Head 88961561
Rocker Covers, pair 12499200 "572"
Valve, Intake 12366987 2.25" Stainless steel
Valve, Exhaust 88963128 1.88" Stainless steel
Valve, Spring 88963933 Dual
Valve, Retainer 12366990 Chrome moly steel
Key, Valve Retainer 12366992
Shim, Valve Spring 88963937
Rocker Arm 12361323 Roller 1.7:1
Lifters 88962920 Roller
Push Rod, Intake 88962284 High performance one piece
Push Rod, Exhaust 88962283 High performance one piece
Oil Pan 10240721
Windage Tray, Oil 88962187
Gasket, Oil Pan 10106407
Oil Pump 88963707
Spark Plug 5613100 - R42XLS
Fuel ............................. Race fuel
Paint Code: 49-24550
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Products Accessories for ZZ572 Crate Engine 720R Base Race Engine 12498826
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